The redneck strike again.

[Angrboda]

You're such an idiot. It has nothing to do with the meaning of contradictory. It's still not an oxymoron no matter how much shit you pull from your ass.

Oh, a yogini that swear
That is not very nice.
Anyway after all your bla, bla, bla, you haven't told us why it is not contradictory.
Explain where is the logic in someone who say that God does not exist and at the same time proceed toward God by trying to learn and improve his-her life all the time.
Tell us where do you think that that effort will eventually lead to?

Again, it has nothing to do with contradiction.

oxymoron, n.

1. Rhetoric. A figure of speech in which a pair of opposed or markedly contradictory terms are placed in conjunction for emphasis.

Is the word "atheism" a pair of terms? No it is not. It's one word. Therefore it's not an oxymoron.

oxymoron, n.

2. (general) A contradiction in terms.

contradiction in terms

1. A phrase or expression in which the component words contradict one another, often unintentionally, or are claimed to do so when seen from a particular point of view.

"A miniature giant" is a contradiction in terms.

Note again that an oxymoron requires words, plural. A single word contradicting itself is not an oxymoron.